Self-assembly of ABC coil-rod-coil triblock molecules with perforated lamellar mesophases
SCIE
SCOPUS
- Title
- Self-assembly of ABC coil-rod-coil triblock molecules with perforated lamellar mesophases
- Authors
- Oh, NK; Zin, WC; Im, JH; Lee, M
- Date Issued
- 2006-07-12
- Publisher
- ELSEVIER SCI LTD
- Abstract
- The synthesis and characterization of ABC coil-rod-coil triblock (monomer) and ABCBA coil-rod-coil-rod-coil triblock dimer (dimer) molecules of docosyl 4-[4-[methyloxypoly(ethyleneoxy)ethyloxy]-4-biphenylcarboxyloxy]-4-biphenyl carboxylate with poly(ethylene oxide) (PEO) coil are described. The self-assembling behavior of triblock molecules is characterized by a combination of techniques consisting of differential scanning calorimetry (DSC), thermal polarized optical microscopy (POM), and X-ray diffraction (XRD) measurement. Monomer and dimer self-assemble into three lamellar crystalline phases (k(1), k(2), and k(3)) and 3D-hexagonally perforated lamellar (HPL) and 2D-hexagonal columnar (col) liquid crystalline phases as temperature increases. In addition to the phases exhibited by monomer, dimer shows 3D-tetragonally perforated lamellar (TPL) and spherical micellar (M) liquid crystalline phases. These results demonstrate that simple dimerization of coil-rod-coil molecule by connecting PEO block induces 3D-tetragonally perforated lamellar and spherical micellar mesophases. (c) 2006 Elsevier Ltd. All rights reserved.
- Keywords
- ABCBA coil-rod-coil-rod-coil triblock dimer molecule; dimerization; 3D-tetragonally perforated lamellar liquid crystalline phase; DIBLOCK COPOLYMERS; BLOCK-COPOLYMERS; PHASE-BEHAVIOR; LAYER PHASE; NANOSTRUCTURES; POLYMORPHISM; DISORDER; ORDER; ORGANIZATION; TRANSITIONS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/29569
- DOI
- 10.1016/j.polymer.2006.05.039
- ISSN
- 0032-3861
- Article Type
- Article
- Citation
- POLYMER, vol. 47, no. 15, page. 5275 - 5286, 2006-07-12
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